On your copy of the database front end (that you take home with you),
delete the existing table (this does not delete the table, it only
breaks the link). Note: You can tell if your table is the linked table
if it has an arrow next to the table name.
Then click on File + Get External data + Import.
Navigate to the database that contains the actual back end table.
Select the table. Click on Options. Select Definition and Data.
If you also need to import the back end relationships, click on Import
Relationships.
Click OK.

You now have all the current records in that table on your database,
but it is no longer linked to the other database.